Biology
What organelle is primarily responsible for producing ATP through oxidative phosphorylation in eukaryotic cells?
Mitochondria
What is the molecular geometry of a carbon atom with four equivalent sp³ hybridized bonds?
Tetrahedral
Which fundamental force holds quarks together inside protons and neutrons?
Strong nuclear force
What is the average-case time complexity of binary search on a sorted array?
O(log n)
What is the largest planet in our solar system?
Jupiter
Which amino acid contains a thiol (-SH) group?
Cysteine
What happens to the entropy of an isolated system at equilibrium?
It is maximized
What is the name of the process by which a star like the Sun converts hydrogen into helium in its core?
Nuclear fission
Which data structure provides average O(1) lookup by key?
Hash table
Which country has the most natural lakes in the world?
Canada
What is the primary cause of Earth’s seasons?
Earth’s axial tilt
Which quantum number determines the shape of an atomic orbital?
Azimuthal l
What phenomenon causes the redshift of a receding galaxy?
Doppler effect
Which mathematical operation gives the slope of a function at a point?
Derivative
What is the only letter that does not appear in the name of any U.S. state?
Q
A patient has a mutation that increases hemoglobin's affinity for oxygen. Which change would occur?
Leftward shift of the O2 dissociation curve
Which compound is expected to have the lowest pKa?
Ethanol
Phenol
Acetic acid
Acetylene
Acetic Acid
Which material property describes resistance to deformation under an applied stress?
Elastic (Young) modulus
In machine learning, what is overfitting?
Low training error but high testing error
Which ancient civilization developed the writing system known as cuneiform?
The Sumerians
Which histone modification is most strongly associated with active gene transcription?
H3K27ac
Why does graphene have exceptionally high electrical conductivity?
Delocalized π electrons
Which quantity is conserved due to translational symmetry according to Noether’s theorem?
Linear momentum
Which algorithm has an average-case time complexity of O(n log n) but a worst-case complexity of O(n2)?
Quick sort
What is the name of the only known moon in the Solar System to have a dense atmosphere primarily composed of nitrogen, other than Earth?
Titan